/* ===================

AX2E (AXESCON XACML 2.0 Engine) is the Java authorization engine, which implements OASIS XACML 2.0 standard.
Copyright (C) 2007 AXESCON LLC

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA


Contact: AXESCON LLC - info{at}axescon.com

 =================== */
package axescon.xacml.model.shared.attr;


public class DoubleAttribute extends AbstractAttributeValue implements ArithmeticValue {
    public static final String dataType =
            "http://www.w3.org/2001/XMLSchema#double";

    public String getDataType() {
        return dataType;
    }

    private double value;

    public DoubleAttribute(double value) {
        this.value = value;
    }

    public double getValue() {
        return value;
    }

    public boolean equals(Object o) {
        if (!(o instanceof DoubleAttribute))
            return false;

        DoubleAttribute other = (DoubleAttribute) o;

        return (value == other.value);
    }

    public int hashCode() {
        return (int) value;
    }

    public ArithmeticValue subtract(ArithmeticValue arg) {
        DoubleAttribute dv = (DoubleAttribute) arg;
        return new DoubleAttribute(getValue() - dv.getValue());
    }

    public ArithmeticValue multiply(ArithmeticValue arg) {
        DoubleAttribute dv = (DoubleAttribute) arg;
        return new DoubleAttribute(getValue() * dv.getValue());
    }

    public ArithmeticValue divide(ArithmeticValue arg) {
        DoubleAttribute dv = (DoubleAttribute) arg;
        return new DoubleAttribute(getValue() / dv.getValue());
    }

    public ArithmeticValue mod(ArithmeticValue arg) {
        DoubleAttribute dv = (DoubleAttribute) arg;
        return new DoubleAttribute(getValue() % dv.getValue());
    }

    public ArithmeticValue add(ArithmeticValue arg) {
        DoubleAttribute dv = (DoubleAttribute) arg;
        return new DoubleAttribute(getValue() + dv.getValue());
    }

    public ArithmeticValue sum(ArithmeticValue[] arg) {
        double sum = 0;
        if (arg != null) {
            for (int i = 0; i < arg.length; i++) {
                sum += ((DoubleAttribute) arg[i]).getValue();
            }
        }
        return new DoubleAttribute(sum);
    }

    public int compareTo1(axescon.xacml.model.policy.AttributeValue o) {
        DoubleAttribute obj = (DoubleAttribute) o;
        return Double.compare(getValue(), obj.getValue());
    }

    public ArithmeticValue getZero() {
        return new DoubleAttribute(0d);
    }
}
